i m having project in mind, which i want to be real time web app, i m looking at Meteor and Derby.js but they are too young. but recetly i came through to blog => Why Rails 4 Live Streaming is a big deal - Phusion Blog and video => Live Streaming from Rails 4 - YouTube
so its a good idea to use Node.js for real time or i should wait for rails4.
Thank you.